Question

d Define an echo (1 mark) A girl standing between two diffs makes a loud sound She hears the first echo after 1.5s and the second Is later. Find the distance between the dilfs. (4 marks) e State two factors that affect the frequency of a note from a stretch string (2 marks) End​

Answer 1

Answer:

echo is the sound reflection like when you are say something in high voice your sound reflect and you hear it 2,3,4or5 time